Fehler beim X-CSRF-Token

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exception 'Shopware\Components\CSRFTokenValidationException' with message 'The provided X-CSRF-Token for path "/newsletter" is invalid. Please go back, reload the page and try again.' in /www/htdocs/w0143f14/XXX/engine/Shopware/Components/CSRFTokenValidator.php:151

core

{

    "uri": "/newsletter",

    "method": "POST",

    "query": {

        "module": "frontend",

        "controller": "newsletter",

        "action": "index"

    },

    "post": {

        "subscribeToNewsletter": "1",

        "newsletter": ""

    }

}